/*
 * jQuery Nivo Slider v2.3
 * http://nivo.dev7studios.com
 *
 * Copyright 2010, Gilbert Pellegrom
 * Free to use and abuse under the MIT license.
 * http://www.opensource.org/licenses/mit-license.php
 *
 * May 2010 - Pick random effect from specified set of effects by toronegro
 * May 2010 - controlNavThumbsFromRel option added by nerd-sh
 * May 2010 - Do not start nivoRun timer if there is only 1 slide by msielski
 * April 2010 - controlNavThumbs option added by Jamie Thompson (http://jamiethompson.co.uk)
 * March 2010 - manualAdvance option added by HelloPablo (http://hellopablo.co.uk)
 */

(function($) {

	 var NivoSlider = function(element, options){
		//Defaults are below
		var settings = $.extend({}, $.fn.nivoSlider.defaults, options);

		  //Useful variables. Play carefully.
		  var vars = {
				currentSlide: 0,
				currentImage: '',
				totalSlides: 0,
				randAnim: '',
				running: false,
				paused: false,
				stop:false
		  };

		  //Get this slider
		  var slider = $(element);
		  slider.data('nivo:vars', vars);
		  slider.css('position','relative');
		  slider.addClass('nivoSlider');

		  //Find our slider children
		  var kids = slider.children();
		  kids.each(function() {
				var child = $(this);
				var link = '';
				if(!child.is('img')){
					 if(child.is('a')){
						  child.addClass('nivo-imageLink');
						  link = child;
					 }
					 child = child.find('img:first');
				}
				//Get img width & height
				var childWidth = child.width();
				if(childWidth == 0) childWidth = child.attr('width');
				var childHeight = child.height();
				if(childHeight == 0) childHeight = child.attr('height');
				//Resize the slider
				if(childWidth > slider.width()){
					 slider.width(childWidth);
				}
				if(childHeight > slider.height()){
					 slider.height(childHeight);
				}
				if(link != ''){
					 link.css('display','none');
				}
				child.css('display','none');
				vars.totalSlides++;
		  });

		  //Set startSlide
		  if(settings.startSlide > 0){
				if(settings.startSlide >= vars.totalSlides) settings.startSlide = vars.totalSlides - 1;
				vars.currentSlide = settings.startSlide;
		  }

		  //Get initial image
		  if($(kids[vars.currentSlide]).is('img')){
				vars.currentImage = $(kids[vars.currentSlide]);
		  } else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
		  }

		  //Show initial link
		  if($(kids[vars.currentSlide]).is('a')){
				$(kids[vars.currentSlide]).css('display','block');
		  }

		  //Set first background
		  slider.css('background','url("'+ vars.currentImage.attr('src') +'") no-repeat');

		  //Add initial slices
		  for(var i = 0; i < settings.slices; i++){
				var sliceWidth = Math.round(slider.width()/settings.slices);
				if(i == settings.slices-1){
					 slider.append(
						  $('<div class="nivo-slice"></div>').css({ left:(sliceWidth*i)+'px', width:(slider.width()-(sliceWidth*i))+'px' })
					 );
				} else {
					 slider.append(
						  $('<div class="nivo-slice"></div>').css({ left:(sliceWidth*i)+'px', width:sliceWidth+'px' })
					 );
				}
		  }

		  //Create caption
		  slider.append(
				$('<div class="nivo-caption"><p></p></div>').css({ display:'none', opacity:settings.captionOpacity })
		  );
		  //Process initial  caption
		  if(vars.currentImage.attr('title') != ''){
				var title = vars.currentImage.attr('title');
				if(title.substr(0,1) == '#') {
					var position = $(title).attr('data-position');
					title = $(title).html();
				}
				$('.nivo-caption p', slider).html(title);
				$('.nivo-caption', slider).addClass(position).animate({'width': 'show', 'opacity': 'show'}, settings.animSpeed, settings.captionEasing);
		  }

		  //In the words of Super Mario "let's a go!"
		  var timer = 0;
		  if(!settings.manualAdvance && kids.length > 1){
				timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
		  }

		  //Add Direction nav
		  if(settings.directionNav){
				slider.append('<div class="nivo-directionNav"><a class="nivo-prevNav">Prev</a><a class="nivo-nextNav">Next</a></div>');

				//Hide Direction nav
				if(settings.directionNavHide){
					 $('.nivo-directionNav', slider).hide();
					 slider.hover(function(){
						  $('.nivo-directionNav', slider).show();
					 }, function(){
						  $('.nivo-directionNav', slider).hide();
					 });
				}

				$('a.nivo-prevNav', slider).live('click', function(){
					 if(vars.running) return false;
					 clearInterval(timer);
					 timer = '';
					 vars.currentSlide-=2;
					 nivoRun(slider, kids, settings, 'prev');
				});

				$('a.nivo-nextNav', slider).live('click', function(){
					 if(vars.running) return false;
					 clearInterval(timer);
					 timer = '';
					 nivoRun(slider, kids, settings, 'next');
				});
		  }

		  //Add Control nav
		  if(settings.controlNav){
				var nivoControl = $('<div class="nivo-controlNav"></div>');
				slider.append(nivoControl);
				for(var i = 0; i < kids.length; i++){
					 if(settings.controlNavThumbs){
						  nivoControl.addClass('nav-thumbs');
						  var child = kids.eq(i);
						  if(!child.is('img')){
								child = child.find('img:first');
						  }
						  if (settings.controlNavThumbsFromAlt) {
								nivoControl.append('<a class="nivo-control" alt="'+ i +'"><img src="'+ child.attr('alt') + '" alt="" /></a>');
						  } else {
								nivoControl.append('<a class="nivo-control" alt="'+ i +'"><img src="'+ child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) +'" alt="" /></a>');
						  }
					 } else {
						  nivoControl.append('<a class="nivo-control" alt="'+ i +'">'+ (i + 1) +'</a>');
					 }

				}
				//Set initial active link
				$('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
            
				$('.nivo-controlNav a', slider).live('click', function(){
                if(vars.running) return false;
                if($(this).hasClass('active')) return false;
                clearInterval(timer);
                timer = '';
                slider.css('background','url("'+ vars.currentImage.attr('src') +'") no-repeat');
					 vars.currentSlide = $(this).attr('alt') - 1;
					 nivoRun(slider, kids, settings, 'control');
            });
        }
        
        //Keyboard Navigation
		  if(settings.keyboardNav){
				$(window).keypress(function(event){
					 //Left
					 if(event.keyCode == '37'){
						  if(vars.running) return false;
						  clearInterval(timer);
						  timer = '';
						  vars.currentSlide-=2;
						  nivoRun(slider, kids, settings, 'prev');
					 }
					 //Right
					 if(event.keyCode == '39'){
						  if(vars.running) return false;
						  clearInterval(timer);
						  timer = '';
						  nivoRun(slider, kids, settings, 'next');
                }
            });
        }
        
        //For pauseOnHover setting
		  if(settings.pauseOnHover){
            slider.hover(function(){
                vars.paused = true;
                clearInterval(timer);
                timer = '';
            }, function(){
                vars.paused = false;
                //Restart the timer
					 if(timer == '' && !settings.manualAdvance){
						  timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
                }
            });
        }
        
        //Event when Animation finishes
		  slider.bind('nivo:animFinished', function(){
				vars.running = false;
				//Hide child links
				$(kids).each(function(){
					 if($(this).is('a')){
						  $(this).css('display','none');
					 }
				});
				//Show current link
				if($(kids[vars.currentSlide]).is('a')){
					 $(kids[vars.currentSlide]).css('display','block');
				}
				//Restart the timer
				if(timer == '' && !vars.paused && !settings.manualAdvance){
					 timer = setInterval(function(){ nivoRun(slider, kids, settings, false); }, settings.pauseTime);
				}
				//Trigger the afterChange callback
				settings.afterChange.call(this);
        });

		  // Private run method
		var nivoRun = function(slider, kids, settings, nudge){
			//Get our vars
			var vars = slider.data('nivo:vars');

				//Trigger the lastSlide callback
				if(vars && (vars.currentSlide == vars.totalSlides - 1)){
				settings.lastSlide.call(this);
			}

				// Stop
			if((!vars || vars.stop) && !nudge) return false;

			//Trigger the beforeChange callback
			settings.beforeChange.call(this);

			//Set current background before change
			if(!nudge){
				slider.css('background','url("'+ vars.currentImage.attr('src') +'") no-repeat');
			} else {
				if(nudge == 'prev'){
					slider.css('background','url("'+ vars.currentImage.attr('src') +'") no-repeat');
				}
				if(nudge == 'next'){
					slider.css('background','url("'+ vars.currentImage.attr('src') +'") no-repeat');
				}
			}
			vars.currentSlide++;
				//Trigger the slideshowEnd callback
			if(vars.currentSlide == vars.totalSlides){
				vars.currentSlide = 0;
				settings.slideshowEnd.call(this);
			}
			if(vars.currentSlide < 0) vars.currentSlide = (vars.totalSlides - 1);
			//Set vars.currentImage
			if($(kids[vars.currentSlide]).is('img')){
				vars.currentImage = $(kids[vars.currentSlide]);
			} else {
				vars.currentImage = $(kids[vars.currentSlide]).find('img:first');
			}

			//Set acitve links
			if(settings.controlNav){
				$('.nivo-controlNav a', slider).removeClass('active');
				$('.nivo-controlNav a:eq('+ vars.currentSlide +')', slider).addClass('active');
			}

			//Process caption
			if(vars.currentImage.attr('title') != ''){
				var title = vars.currentImage.attr('title');
				if(title.substr(0,1) == '#') {
					position = $(title).attr('data-position');
					title = $(title).html();
				}

				if($('.nivo-caption', slider).css('display') == 'block'){
					$('.nivo-caption', slider).animate({'width': 'hide', 'opacity': 'hide'}, settings.animSpeed, settings.captionEasing, function(){
						$(this).attr('class', 'nivo-caption').addClass(position);
						$(this).find('>p').html(title);
					});
				} else {
					$('.nivo-caption p', slider).html(title);
				}
				$('.nivo-caption', slider).animate({'width': 'show', 'opacity': 'show'}, settings.animSpeed, settings.captionEasing);
			} else {
				$('.nivo-caption', slider).animate({'width': 'hide', 'opacity': 'hide'}, settings.animSpeed, settings.captionEasing);
			}

			//Set new slice backgrounds
			var  i = 0;
			$('.nivo-slice', slider).each(function(){
				var sliceWidth = Math.round(slider.width()/settings.slices);
				$(this).css({ height:'0px', opacity:'0',
					background: 'url("'+ vars.currentImage.attr('src') +'") no-repeat -'+ ((sliceWidth + (i * sliceWidth)) - sliceWidth) +'px 0%' });
				i++;
			});

			if(settings.effect == 'random'){
				var anims = new Array("sliceDownRight","sliceDownLeft","sliceUpRight","sliceUpLeft","sliceUpDown","sliceUpDownLeft","fold","fade");
				vars.randAnim = anims[Math.floor(Math.random()*(anims.length + 1))];
				if(vars.randAnim == undefined) vars.randAnim = 'fade';
			}

				//Run random effect from specified set (eg: effect:'fold,fade')
				if(settings.effect.indexOf(',') != -1){
					 var anims = settings.effect.split(',');
					 vars.randAnim = $.trim(anims[Math.floor(Math.random()*anims.length)]);
				}

			//Run effects
			vars.running = true;
			if(settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' ||
				settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft'){
				var timeBuff = 0;
				var i = 0;
				var slices = $('.nivo-slice', slider);
				if(settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') slices = $('.nivo-slice', slider)._reverse();
				slices.each(function(){
					var slice = $(this);
					slice.css('top','0px');
					if(i == settings.slices-1){
						setTimeout(function(){
							slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function(){
							slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			}
			else if(settings.effect == 'sliceUp' || settings.effect == 'sliceUpRight' || vars.randAnim == 'sliceUpRight' ||
					settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft'){
				var timeBuff = 0;
				var i = 0;
				var slices = $('.nivo-slice', slider);
				if(settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') slices = $('.nivo-slice', slider)._reverse();
				slices.each(function(){
					var slice = $(this);
					slice.css('bottom','0px');
					if(i == settings.slices-1){
						setTimeout(function(){
							slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function(){
							slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			}
			else if(settings.effect == 'sliceUpDown' || settings.effect == 'sliceUpDownRight' || vars.randAnim == 'sliceUpDown' ||
					settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft'){
				var timeBuff = 0;
				var i = 0;
				var v = 0;
				var slices = $('.nivo-slice', slider);
				if(settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') slices = $('.nivo-slice', slider)._reverse();
				slices.each(function(){
					var slice = $(this);
					if(i == 0){
						slice.css('top','0px');
						i++;
					} else {
						slice.css('bottom','0px');
						i = 0;
					}

					if(v == settings.slices-1){
						setTimeout(function(){
							slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function(){
							slice.animate({ height:'100%', opacity:'1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					v++;
				});
			}
			else if(settings.effect == 'fold' || vars.randAnim == 'fold'){
				var timeBuff = 0;
				var i = 0;
				$('.nivo-slice', slider).each(function(){
					var slice = $(this);
					var origWidth = slice.width();
					slice.css({ top:'0px', height:'100%', width:'0px' });
					if(i == settings.slices-1){
						setTimeout(function(){
							slice.animate({ width:origWidth, opacity:'1.0' }, settings.animSpeed, '', function(){ slider.trigger('nivo:animFinished'); });
						}, (100 + timeBuff));
					} else {
						setTimeout(function(){
							slice.animate({ width:origWidth, opacity:'1.0' }, settings.animSpeed);
						}, (100 + timeBuff));
					}
					timeBuff += 50;
					i++;
				});
			}
			else if(settings.effect == 'fade' || vars.randAnim == 'fade'){
				var i = 0;
				$('.nivo-slice', slider).each(function(){
					$(this).css('height','100%');
					if(i == settings.slices-1){
						$(this).animate({ opacity:'1.0' }, (settings.animSpeed*2), '', function(){ slider.trigger('nivo:animFinished'); });
					} else {
						$(this).animate({ opacity:'1.0' }, (settings.animSpeed*2));
					}
					i++;
				});
			}
		}

		  // For debugging
		  var trace = function(msg){
				if (this.console && typeof console.log != "undefined")
					 console.log(msg);
		  }

		  // Start / Stop
		  this.stop = function(){
				if(!$(element).data('nivo:vars').stop){
					 $(element).data('nivo:vars').stop = true;
					 trace('Stop Slider');
				}
		  }

		  this.start = function(){
				if($(element).data('nivo:vars').stop){
					 $(element).data('nivo:vars').stop = false;
					 trace('Start Slider');
				}
		  }

		  //Trigger the afterLoad callback
		  settings.afterLoad.call(this);
	 };

	 $.fn.nivoSlider = function(options) {

		  return this.each(function(){
				var element = $(this);
				// Return early if this element already has a plugin instance
				if (element.data('nivoslider')) return;
				// Pass options to plugin constructor
				var nivoslider = new NivoSlider(this, options);
				// Store plugin object in this element's data
				element.data('nivoslider', nivoslider);
		  });

	};

	//Default settings
	$.fn.nivoSlider.defaults = {
		effect:'random',
		slices:15,
		animSpeed:500,
		pauseTime:3000,
		startSlide:0,
		directionNav:true,
		directionNavHide:true,
		controlNav:true,
		controlNavThumbs:false,
		controlNavThumbsFromAlt:false,
		controlNavThumbsSearch:'.jpg',
		controlNavThumbsReplace:'_thumb.jpg',
		keyboardNav:true,
		pauseOnHover:true,
		manualAdvance:true,
		captionOpacity:0.8,
		captionEasing:'linear',
		beforeChange: function(){},
		afterChange: function(){},
		slideshowEnd: function(){},
		lastSlide: function(){},
		afterLoad: function(){}
	};

	$.fn._reverse = [].reverse;

})(jQuery);